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SanDisk 128GB Extreme MicroSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-128G-GN6MA - SoppiGO
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SanDisk 128GB Extreme MicroSDXC UHS-I Memory Card with Adapter – C10, U3, V30, 4K, A2, Micro SD – SDSQXA1-128G-GN6MA


Last updated on October 26, 2021 12:00 am


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  • Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); Requires compatible devices capable of reaching such speeds
  • Up to 90MB/s write speeds for fast shooting; Requires compatible devices capable of reaching such speeds
  • 4K UHD and Full HD Ready with UHS speed class 3 (U3) and video speed class 30 (V30)
  • Rated A2 for faster loading and in app performance
  • Built for and tested in harsh conditions: Temperature Proof, Water Proof, shock Proof and x ray Proof
  • Get the SanDisk memory zone app for easy file management (available on Google Play)
  • Manufacturer lifetime warranty (30 year warranty in Germany and regions not recognizing lifetime; See official SanDisk website for more details regarding warranty in your region)
  • Order with your Alexa enabled device; Just ask ‘Alexa, order SanDisk microSD’

Specification: SanDisk 128GB Extreme MicroSDXC UHS-I Memory Card with Adapter – C10, U3, V30, 4K, A2, Micro SD – SDSQXA1-128G-GN6MA

RAM 128 GB
Memory Speed 160 Megabytes Per Second
Brand SanDisk
Item model number SDSQXA1-128G-GN6MA
Item Weight 0.16 ounces
Product Dimensions 0.04 x 0.59 x 0.43 inches
Item Dimensions LxWxH 0.04 x 0.59 x 0.43 inches
Voltage 1 Volts
Manufacturer Western Digital Technologies Inc.
Is Discontinued By Manufacturer No
Date First Available August 20, 2018

10 reviews for SanDisk 128GB Extreme MicroSDXC UHS-I Memory Card with Adapter – C10, U3, V30, 4K, A2, Micro SD – SDSQXA1-128G-GN6MA

3.3 out of 5
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  1. T. Boyle

    Anyone claiming that the green backed microsdxc cards are fake needs to do better research. In all of Sandisk’s marketing, they show a green backed microsd with the “XC” instead of “HC”. In all reviews from reputable websites show the same.

    Secondly, anyone complaining about how there is missing storage doesn’t understand how marketing of high capacity storage media works. They calculate size based on 1000 kilobyte per megabyte not 1024 kilobyte per megabyte. If you bought the 128GB model, your device would see it as 119GB because your device calculates it as 1024KB per 1MB. It’s been done this way for decades.
    Here’s a list of most of the capacities that SanDisk sells with their corresponding “actual” size.

    32GB = 29.8023GB
    64GB = 59.6046GB
    128GB = 119.2093GB
    256GB = 238.4186GB
    400GB = 372.529GB
    1TB = 931.3226GB

    When you buy a hard drive, you also don’t get the full capacity for the same reason. This isn’t just SanDisk.

    Third, the speeds of the card are “UP TO” x and y read and write. It’s highly dependant on what device you’re using it in and even then, those are burst speeds, it’s not intended to sustain that speed for longer than a few seconds.

    It’s really sad to see an incompetent reviewer up at the top spot when this is a genuinely high quality product.

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  2. E. L.

    Like many of the other reviewers pointed out, this card is fraudulent. “U3” and “A2” my ass! The read/write speeds are nowhere near the advertised values. I’m getting 74/66 MB/s which is worse than my Samsung 128GB U1 microSD. Non-sequential writes are awful at 6/2 MB/s. $30 might seem like a good deal for this card but it’s not. Don’t be fooled!

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  3. DagDerNiT

    I have several mini memory cards from last year and none were fast enough for the new Dji Mavic Pro 2 or the ZOoom. There was even a warning that popped up on the GO 4 app that will say SLOW where the sd card info is. After installing the Sandisk Extreme U3 A2, the SLOW warning disappeared and all is well. Havent been able to use as the weather here in the great Pacific NW has been rainy but once the sun comes back I am flying!

    ***Update October 21st, 2018***
    I ended up installing the microsd in my new Moto Z2 Force Smartphone right after the review, since the weather for flying the drone won’t be nice again till next year. It worked awesome in the Moto for over a week until it died and said it became corrupted. I had many photos and videos that were transferred and lost. Called and emailed support and was asked to jump through hoops so am not very happy about the card and experience with it. Will be buying a different brand and hoping for a better ending.

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  4. Amazon Customer

    Replaced a 64GB memory in my Galaxy S9+, of the same brand just not extreme.
    Now my phone has more storage space than my two best laptops… of course you know, I will buy more.

    This, so far, is the holy grail for portable storage… this has more memory than the SSD in my ThinkPad W530 workstation… blows my mind. As far as quality goes, you can’t beat SanDisk, they been around since the beginning in the SD card arena.

    This little tiny thing, is so tiny, I could put it up my rear end, after filling it with days worth of videos and unending images… doubt I will never need this much room but… I like to record a lot. This thing pretty much turned my lowly cell phone into an absolute powerhouse.

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  5. Amazon Customer

    SanDisk advertises this as the fastest read UHS-I in the market (160mb)! Multiple tests on the 128GB don’t confirm this claim. I tested the card on my Surface pro (2017), Surface GO and XPS 13 and got only 88mb read speed and 84 write speed at best!! My Samsung Evo select 128GB & 256GB have higher read and write speed.

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  6. Benoît

    Compte tenu de mon métier (je suis photographe et opérateur de prises de vues aériennes) je suis un peu pointilleux quant à ces petites bêtes qui nous permettent de stocker une tonne de données mais aussi… de perdre des heures de boulot d’un coup si par malheur on achète des cartes de mauvaise qualité.

    Avec celles-là… ma foi… ce n’est que du bonheur ! Le full HD (1920 x 1080) est parfaitement supporté (il m’est arrivé de shooter dans cette définition en 120 images par seconde), le 4K (4096 x 2160) l’est aussi, et bien évidemment tout ce qui se trouve entre les deux (je pense ici particulièrement à l’UHD en 3840 x 2160).

    Bref, compte tenu de leur excellent rapport qualité/prix j’en ai une douzaine (dont certaines que j’utilise dans mes TVbox en tant que “magnétoscopes” et à ce jour aucune ne m’a jamais lâchée malgré parfois une utilisation extrêmement intensive dans des conditions climatiques (très fortes chaleurs / très grands froids / très fort taux d’humidité) pas toujours au top.

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  7. Larry Lopez

    First red flag was when I looked underneath the card. Instead of being solid black like every other SD card I’ve seen, it looked like a green circuit board with a strange black square on it.

    Second red flag was the MUCH lower than advertised read/write speeds (only 50-55 write with mid 80s read).

    Third red flag was when I tried to copy data from my old sd card on to this one. I was able to get about 21.5 GB of data on to it until it unmounted itself from my computer. I then physically removed the card and inserted it back in the computer. Windows recommended that I repair the drive, so I did. After that, I go and try to copy the data again and it unmounted itself, just like before. I tried the same thing by repairing the drive, except this time, Windows informs me that it could not be repaired! Seriously??

    So much for trying to get a good black Friday deal…

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  8. Mike

    This review is specifically for the item SanDisk Extreme 128GB microSD UHS-I Card with Adapter – 160MB/s with SanDisk MobileMate USB 3.0 microSD Card Reader. My card was shipped from and sold by The top review for this card would have you believe the product I received, based on physical appearance, is fake. The speed tests and H2testw program appear to indicate it achieves the advertised speeds and has the correct capacity using the bundled USB 3.0 card reader in a USB 3.0 port on my desktop Windows 10 PC.
    If this card is somehow “fake” it is quite impressive. I’m sure there are some fakes out there, but if you do decide to buy this card it might be worth performing your own tests before deeming it fake based off the looks alone (assuming it’s not an incredibly obvious fake).
    April 18, 2020 (13 month update): card still works great. No complaints, I’m very happy with it.

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  9. Giovanni (MigliorSoluzione)

    Ho acquistato questa Sandisk Extreme U3 V30 (versione da 32gb) al buon prezzo di 14 euro circa. Prima dell’acquisto di questa sd ne ho valutate anche altre andando a controllare le varie caratteristiche che le compongono e alla fine ho scelto questa per l’ottimo rapporto qualità/prezzo.

    ( Comunque, se siete alla ricerca di una sd economica, quindi con prezzo più basso ma comunque ottima con la quale non dovete farci chissà che cosa, allora vi consiglio di dare un’occhiata anche a questa: copiate e incollate il link su google per aprirlo )

    Le sd sono piene di sigle o parametri che identificano in generale la qualità del prodotto perciò scrivo una piccola guida, semplificata, su cosa significano queste sigle.

    – SDHC: identifica la capienza delle schede. Una scheda da 32gb come questa è sdHC. Una da 64gb viene indicata come sdXC.
    – CLASS: questa è una vecchia classificazione, ormai superata, e identificava la velocità di scrittura minima della sd. Class10 (10mb/s) class6 (6 mb/s) ecc.
    – UHS-I, UHS-II: queste due sigle identificano il nuovo standard da prendere in considerazione quando acquistiamo questi prodotti. Uhs-I supporta velocità di scrittura fino a 104 mb/s, mentre uhs-II fino a 312 mb/s. L’acquisto dell’una o dell’altra dipende dal dispositivo nel quale andrete ad inserirla (es. fotocamera) e quindi dal tipo di bus compatibile dalla fotocamera in questo caso. Se un dispositivo è di tipo uhs-I non supporterà le velocità del uhs-II se inserite una sd con questo standard.
    – U1 U3: diciamo che questa è una sigla molto importante. Sulla scheda di trova una sorta di U con dentro il numero 1 o 3. Indicano la velocità minima di scrittura di 10mb/s o 30mb/s. In linea generale U1 è adatta per video hd e fullhd. U3 è indicata anche per video in 4k. Vi consiglio di prendere la U3!
    – V30, V60 ecc.: nuovo standard che si riferisce alla velocità minima garantita in una registrazione video. V30 equivale a 30mb/s e così via. In generale V30 è adatta per registrazione di video in 4k. Con V60 V90 arriviamo anche agli 8k.
    – A1 e A2: è un nuovo standard indicato per gli smartphone android nei quali è possibile installare app anche su memoria esterna. In particolare le sd con questa sigla svolgono molte più operazioni al secondo rispetto ad altre tradizionali e ciò si traduce in velocità molto maggiore, per esempio, quando si avvia un app. Se cercate su youtube “Sandisk Extreme A1, test di velocità apertura app” troverete un video dove mostra la differenza netta di velocità tra un sd standard e una A1. A2 ha prestazioni ancora più elevate.

    Dopo questi piccoli chiarimenti sulle sigle, facendo un rapporto con la sandisk extreme in questione possiamo renderci conto che è una sd di tutto rispetto in quanto:
    – è di tipo UHS-I U3, quindi velocità minima di scrittura a 30mb/s rispetto a tante altre U1 che hanno un costo simile. Sulle GoPro per un funzionamento affidabile sono consigliate sd U3.
    – È di tipo V30: quindi in registrazione riesce a sostenere una velocità minima di 30mb/s rispetto a tante altre, ad un prezzo simile, che non hanno proprio questa sigla.
    – A1: ideale se dovete utilizzarla su uno smartphone android per i motivi citati sopra nella guida.
    In sostanza, questa sd dal costo di 14 euro racchiude molte specifiche interessanti ad un prezzo contenuto. Volendo esiste anche la classica SD Samsung evo da 32gb al costo di 8 euro circa però è una U1 (non U3), non V30 e non A1.

    Viene consigliate anche da GoPro tra le sd adatte per la HERO7.

    Per quanto riguarda il test di lettura e scrittura, ho testato il prodotto sul mio notebook hp pavilion dv6 tramite lo slot dedicato e i risultati sono:
    Lettura: 87 mb/s e 86mb/s
    Scrittura: 50mb/s e 63mb /s

    Lascio screen dei test. Facendo una ricerca in internet, altri test affermano che sono riusciti a toccare picchi di 99,5mb/s in lettura e addirittura 72,2 mb/s in scrittura, superando il limite dichiarato dalla casa produttrice di 60mb/s.

    Faccio presente, inoltre, che questo tipo di scheda è:
    – immune ai rivelatori a raggi X aeroportuali.
    – Impermeabile IEC 529 IPX7
    – Resistente alle temperature: -25 ºC a +85 ºC per 100 cicli (equivalenti a 28 ore).
    – Resistenti a urti e vibrazioni: tollerano urti sino a 500 G

    Spero di esservi stato utile, ciao!

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  10. Gabriel

    The built-in SSD disk space is extremely expensive on the Surface Pro 6, so getting the smallest Surface Pro 6 and using a microSD card to complement the built-in storage is an attractive option in my opinion.
    The good thing is that this card performs well when inserted in the microSD card reader of the Surface Pro 6 (about 80 MB/s sequential read, 80 MB/s sequential write) although it does not reach the advertised speed (which is “up to” 160 MB/s sequential read, 90 MB/s sequential write).
    As I believe the UHS-1 standard is limited to 104 MB/s anyway I am not sure if it is possible to find microSD cards that would perform faster.
    In short a good choice for the Surface Pro 6 even if possibly not the best choice.

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    SanDisk 128GB Extreme MicroSDXC UHS-I Memory Card with Adapter – C10, U3, V30, 4K, A2, Micro SD – SDSQXA1-128G-GN6MA
    SanDisk 128GB Extreme MicroSDXC UHS-I Memory Card with Adapter – C10, U3, V30, 4K, A2, Micro SD – SDSQXA1-128G-GN6MA


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